Automatic cut-off mechanism for oil-burners.



J. H. BECKER. AUTOMATIC CUT-OFF MECHANISM FOR OIL BURNERS. APPLICATIONFILED l4AB..28,1913.

l, 1 07,748. Pa ented Aug. 18, 1914.

earns AENT onnio.

JULIUS H. BECKER, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR T0 AMERICANHEAT & POWER C0,, 01 SAN FRANCISCO. CALIFORNIA, A CORPORATION OFCALIFORNIA.

AUTCMATIG CUT-OFF MECHANISM FOE OIL-BURNERB.

Specification of Letters Patent. Application filed March as, 1913.

Patented Aug. 18, 1914.

Serial No. 151,231.

To all whom it may concern Be it known that I, Jpnws H. BECKER, acitizen of the United States, residing at San Francisco, in the countyof San Fran-' cisco and State of California. have invent l 'new anduseful Iu'lprovements in Automatic Cut- Off Mechanism for Oil Burners,of which the following is a specification.

This invention relates to an automatic out-off mechanism for oilburners.

In operating oil burners, and particularly oil burners of the down-drafttype shown in the accompanying drawings, it sometimes happens that thefire becomes extinguished; this being generally caused by an oversupplyof water, or a corresponding reduction in the oil supply. Under suchcircumstances, it can readily be seen that means must be provided forautomatically cuttingoff the fuel supply to the burner, as it would onlybe a matter of time when the oil injected would flood the furnace andoverflow into the surrounding quarters.

The object of this invention is to provide means for automaticallycutting-off the fuel supply to the burners the moment the fire in thefurnace becomes extinguished.

The invention consists of the parts and the construction and combinationof parts as hereinafter more fully described and claimed, havingreference to the accompanying d awings, in which igure 1- is a plan viewof the furnace, partly broken away, showing the application of theinvention. Fig. 2 is a side elevation of same, partly broken away.

Referring to the drawings: A indicates in general a furnace of thedown-draft type, having'a combustion chamber 2, in which is centrallymounted a burner plate 3, to which oil and water in the right proportionto support combustion is delivered from a burner 4, through a centralopening 5. The burner here shown may be constructed in any suitablemanner, and provided with regulating valves 6 and 7 for the purpose ofcontrolling the fuel supply in the usual manner. 3

Interposed on the pipe line, between the regulating valves and thesource of fuel supply, is a air of cut-off valves 8 and 9, one for eachine which are here, shown as being connected through links 8' and 9 witha lever 10 pivoted u on a in 10, the movememe of which wil thussimultaneouslv transmitted to either open or close the valves. One endof the lever 10 is provided with an adjustable counterweight 11, havingsufficient weight to normally hold the valves 8 and 9 in an openposition to admit the flow of fuel through the pipe lines.

Suitably mounted upon the opposite end of the lever 10 a receptacle oroverflow tank 12 to which any unconsumed oil which might have a tendencyto flood the furnace wi l be conveyed thrcmgh a spout 13. The

drip-pan or base portion 14; of the furnace is provided with side andend flanges of sufficient height to trap any. unconsumed oil dischargingfrom the burner plate, which is thus collected and discharged throughthe spout to the overflow tank 12.

In operation. supposing that for some reason or other the fire withinthe furnace has become extinguished. It can readily-be seen that the oilinjected through the burner will gradually cool the furnace and floodthe bot tom of same. The flooding oil thus discharged from the burnerwill in this instance be trapped by the side and end flanges 14, formedin the base of the furnace, and will thus be conveyed through thedischarge pipes 13 to the overflow tank 12, supported upon the outer endof the pivoted lever 10.

The gradual filling of the tank will soon overbalance the weight 11 androck the lever 10 into position where the fuel supply valves 8 and 9will be entirely closed, thus shutting off the fuel supply to the burnerand preventing any further flooding of the furnace.

For the purpose of insuring the proper closing of the oil valve at alltimes a slot 15 has been provided which will permit the lever 10 toswing on the water valve 9 con- 'tection, if this should happen tostick; the valve 8 can thus be closed independent of the valve 9, andthe proper closing of the oil valve is thus insured at anytimeregardless of the valve 9.

An automatic shut-off mechanism, constructed as here shown, is simple inconstruction, positive and automatic in act1on, and may be installed inconnection with any fur nace using an oil burning system. The materialsand finish of the different parts of the mechanism are such asexperience and judgment of the manufacturer may dictate.

I wish it understood that variouschanges in form. proportions andconstruction may cm I m Within the seope of the sap s, the r, do Wlfil'lt0 and con ncl to seeure by Letters Patlhe eomlvlnetien with a. furnace,of an miner having a fuel supply pipe and a 5. 511 pl pl (K metedtherewith, a

;Eor. in me furnace chamber for eellecldng uneonsume tl ail or waterdelivered ilu'eugh the burner, lever pivmounted with relation to wefurnace and the oil and Water supply pipes, Valves 1 es, links on thelever on apposite -e the pivet pointeonneetecl with the 6 adjustableWeight on one end of adapted; to normally hold the lever cl oressedposition when the valves open, a collecting chamber 011 end of the leve.and means basin for the eolleetecl ov eel ng chamber each the mewzee 2.The combination with a furnace having a eelcll'loasin formed in the:lurnace chamber 02 an all burner having a fuel supply plpe and a watersupply i e'eOnHectecl therewith, valves on the respective pipes to con--trol the flow 0f water and Oll through same,

2. slotted lever, a pivot pin projecting through the slot,links'eonnecting the valves with ehe lever on opposite sides of the slotand pivot pin, an adjustable weight on one end of the lever adapted tonormally hold the lever in. the depressed position when the valves willremain. open, a collecting chambeer on the oppoeile end. of the lever,and means connected With the furnace catch basin for conveying thecollected overflow Witnesses 'W. WJliLmwy, G, M. PAGE.

